Ok, heres what I did. I used a larger than OEM sized Optima Red Top dual post battery also.
I removed the carb canister, and the OEM battery hold down tray and bracket. I ran my big wiring loom a bit out of the way, its easy to see once your down there.
I bought a steel battery tray and hold down bracket, and I wanted to bolt it directly to the frame peice of the car that houses the power steering rack. The tray was a bit too big and I had to trim off 2 or so inches on each side of the tray to fit, and also trimmed the front of the tray at an angle to give plently of clearance to the tranny and close wires. I then positioned the tray perfectly where I wanted it and attached it with a few self tapping screws and washers. I then proceeded to bolt the battery to the tray with the hold down and trim the hold down bolts.
For the ground there are 2 stock wires. The one comming from the wiring harness bolted right up but for the other wire on the firewall you will need to relocate it or replace it like I did with a longer cable.
For the poisitive there are 2 large wires and the "pack" of wires with the fuse block. One wire goes to the starter, one to the alternator, and the other is the pack of wires. I ran the starter wire directly to the top post, but I decided I wanted the pack of fuses still easily accesable so I ran a 2 guage jumper cable from the top post the hole on the pack of fuses, and mounted the fuses by the shock tower. I just zip tied it to the clutch line but it does not move at all. I also ran the alternator line to the fuse block connector. After it was all done I taped up the positive top post althought it really wasn't needed. I have about 1.5" of clearance from the top of the battery to the bottom of the throttle body elbow.
Here's some pics.
05 Ram 1500